I just purchased a new Geforce 5500 256MB AGP 4x/8x card, installed it, turned on my computer and the monitor is completely blank. The indicator light is orange, so I don't even think there is a signal going to the monitor. I've checked the card, connections, and cables and they all seem fine. I've reinstalled my old card (Radeon 7500 64MB) and it works fine. Is this a problem with AGP? My computer only goes up to 4x but from what I've read my new card should be backwards compatible. Any help would be greatly appreciated!!! My comuter is a P4 2.0 Ghz, 256 DDR Ram, Windows XP.